I have 3 versions of this ERA clone, use them a lot. One has philips screws with no holes in the posts, the other 2 have holes in the posts, on with thumb-screws and the other with hex screws. All perform the same. They work for me as I highly prefer small drippers. They can also be found dirt cheap and many come with nice stainless steel drip tips that are worth the price alone.
If you like the ERA clone, I also suggest the IGO-S, which has a small drip well, philips screws and holes in posts. Also the A6, available with 1 or 2 negative posts, philips screws and holes in posts, and a deeper drip well that's more functional than the IGO-S. These two are about the same size as the ERA clones.
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